Balu (Rajinikanth), an absent minded lecturer in a college, and Sumathi (Suhasini) love each other and plan to marry soon. Balu lives with his younger brother, Raju (Prabhu), and Raju already calls Sumathi Anni. Raju is a bad student and somewhat a rowdy, spoiled by Balu and Sumathi is pamperings. Raju keeps getting into fights with a fellow student (Nassar) and as a result keeps getting into trouble. When Balu comes to help Raju during one of those fights he is killed by Nassar.